I really admire you for posting this and for making the committment to start again. That is fantastic~
As for what you should eat, your surgeon (or his nurses) will probably be able to give you written instructions, but why don't you spend the next 8 days/week doing the "pre-op" liquid diet, just as you did back in '08 before your surgery? Then, when you get the adjustment, you will be ready to hit the ground running with a day or two more of liquids, then mushies, then solid food. You can do this - this website is full of supportive people willing to help.
P.S. Congratulations on your son!